833 search results for "how to import image file to R"

The New 60/40

August 6, 2012
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The New 60/40

I want to share a brilliant idea and a great example from the You’re Looking at the Wrong Number post at the GestaltU blog. Today, I will focus on the section of this post that outlines simple steps to improve a typical 60/40 stock/bond portfolio by using risk allocation instead of dollar allocation, and targeting

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Getting started with Sweave & knitr

August 6, 2012
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Getting started with Sweave & knitr

Cool woven artwork on the campus of Kansas University. The image is CC by Patrick Emerson I recently started to work with Sweave (by Friedrich Leisch)...

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Getting Started Using R, Part 1: RStudio

August 4, 2012
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Getting Started Using R, Part 1:  RStudio

Despite my preference for SAS over R, there are some add-ons to “basic” R that I’ve found that have made my learning process way easier.  While I’m still in my infancy in learning R, I feel like once I found … Continue reading →Getting Started Using R, Part 1: RStudio is an article from randyzwitch.com,...

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Bio7 1.6 for Windows and Linux released!

August 1, 2012
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Bio7 1.6 for Windows and Linux released!

01.08.2012 Finally i released a new version of Bio7 with many improvements and new features. Updated tutorials are available, too. The new Bio7 1.6 release can be downloaded here. Please also download the examples *.zip file from the sourceforge website which contains new examples for Bio7 1.6 (e.g. an example to cluster an image folder with

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Big data, big analytics, big opportunity

July 30, 2012
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Big data, big analytics, big opportunity

Data, data, every where Nor any byte to think The world today is awash with data. Corporations, governments, and individuals are busy generating petabytes of data on culture, economy, environment, religion, and society.  While data has become abundant and ubiquitous, data analysts needed to turn raw data into knowledge are in fact in short...

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Archetypal Analysis

July 30, 2012
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Archetypal Analysis

Thinking Strategically about Customer HeterogeneityIronically, market segmentation, whose motto is "one size does not fit all," seems to rely almost exclusively on one definition of what constitutes a segment.  Borrowing its definition f...

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Blue Jay and Scrub Jay : Using rvertnet to check the distributions in R

July 30, 2012
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Blue Jay and Scrub Jay : Using rvertnet to check the distributions in R

As part of my Google Summer of Code, I am also working on another package for R called rvertnet. This package is a wrapper in R for VertNet websites. Vertnet is a vertebrate distributed database network consisting of FishNet2, MaNIS, HerpNET, and ORNIS. Out of that currently Fishnet, HerpNET and ORNIS have their v2 portals serving data. rvertnet has functions now to access

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Blue Jay and Scrub Jay : Using rvertnet to check the distributions in R

July 30, 2012
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Blue Jay and Scrub Jay : Using rvertnet to check the distributions in R

As part of my Google Summer of Code, I am also working on another package for R called rvertnet. This package is a wrapper in R for VertNet websites. Vertnet is a vertebrate distributed database network consisting of FishNet2, MaNIS, HerpNET, and ORNIS. Out of that currently Fishnet, HerpNET and ORNIS have their v2 portals serving data. rvertnet has functions now to access

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ggplot2: A little twist on back-to-back bar charts

July 27, 2012
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ggplot2: A little twist on back-to-back bar charts

Sangyoon Lee BackgroundWhile thinking about ways to represent incoming and outgoing flows in a business process, I thought about using export-import charts like the one shown here in the Learning R blog. However, as the author acknowledges, it is difficult to compare individual values using these charts. Regardless, I still wanted to have...

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Plotting 95% Confidence Bands in R

July 26, 2012
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Plotting 95% Confidence Bands in R

I am comparing estimates from subject-specific GLMMs and population-average GEE models as part of a publication I am working on. As part of this, I want to visualize predictions of each type of model including 95% confidence bands. First I had to ma...

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